JP3311061B2 - Electronic equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic device which is supplied with power by a power cord which can be inserted and removed from a commercial power supply.

[0002]

2. Description of the Related Art FIG. 6 is a perspective view of a power connector (AC inlet or AC outlet) of a conventional electronic device.

A power connector has a connector body 601 provided with a ground terminal 604 and electrode terminals 602 and 603. After the electric wire 606 is entangled and soldered to the ground terminal 604, it is fixed with a heat shrink tube 605 or the like.
A round terminal 607 is crimped to the other end of the electric wire 606. The round terminal 607 is fixed to a frame ground (not shown) in the electronic device with a screw. Electrode terminal 60
2, 603 is bent into an L shape and can be connected to an electric circuit board (not shown) by soldering.

[0004]

However, the above conventional example has the following disadvantages.

[0005] 1. The fixing of the vinyl wire with the entangled solder and the heat-shrinkable tube has poor workability and is expensive.

[0006] 2. It was necessary to cover the metal component with a mold or to add a holding member for fixing the vinyl wire so that the blade cross section of the metal component did not contact the vinyl wire and damage the coating of the vinyl wire.

[0007] 3. Since the ground is carried by electric wires, noise resistance varies depending on the state of the electric wires.

An object of the present invention is to provide an electronic device which has good workability in connecting a ground terminal of a power connector to a frame ground, has a small number of parts, and has good noise resistance.

[0009]

An electronic device according to the present invention includes an inlet having a ground terminal to which a power cord is connected, and a metal member for holding the inlet, wherein the ground terminal of the inlet is connected to the ground terminal. In an electronic device connected to a metal member, the inlet and the metal member each have a fitting portion for fitting with each other, and the inlet and the metal member are fitted with respective fitting portions,
The ground terminal of the inlet and the metal member are fixed by screws, and the metal member is connected to the inlet.
Doo is characterized Rukoto to have a display that means ground which is directly connected.

[0010]

[Action] (1) eliminating the fixing work by tying solder and heat shrink tubing vinyl wire power connector ground terminal, the ground terminal so screwed to a metal member
At the same time, the inlet and the metal member
And the ground to which the inlet is directly connected
Since the meaning is provided on the metal member, the work efficiency of connecting the ground terminal of the power connector to the frame ground is improved.

(2) Since the ground line is not a vinyl electric wire, there is no need to protect the metal part from the blade section, and the number of parts is reduced.

(3) Since there is no vinyl electric wire in the ground line, noise resistance is good.

If another metal member is connected to the metal member to which the ground terminal is connected with a screw, the noise resistance is further improved.

[0014]

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view of a main part of an electronic apparatus showing a first embodiment of the present invention, FIG. 2 is a perspective view of an inlet 101,
FIG. 3 is a perspective view of the metal member 102, and FIG. 4 is a perspective view of the electric circuit board 106. FIG. 1 is a perspective view showing a state where an inlet 101 and a metal member 102 are mounted on an electric circuit board 106.

Inlet 101 connected to power cord
As shown in FIG. 2, the device has electrode terminals 202 and 203 and a ground terminal 204, and a projection 201 is formed on the upper surface. The electrode terminals 202 and 203 are both bent into an L shape and soldered to the electric circuit board 106. The ground terminal 204 is formed with a through hole 205 so that it can be attached to the metal member 102 with the screw 110. The inlet 101 is fixed to and held by the metal member 102 by fitting the protrusion 201 into an opening 307 of the metal member 102 (described later). Note that the ground terminal 204 and the electrode terminal 202
And 203 are provided so as to secure a creepage distance and a space distance that do not cause a problem of electrical safety.

As shown in FIG. 3, the metal member 102
A screw hole 10 for screw-connecting the metal member 102 to another metal member (not shown), for example, a sheet metal for shielding noise radiated from the power supply unit or noise entering from the outside.
4, 105, 114 are formed, and leads 302, 304, 305, 306, 308 for connecting the metal member 102 to the electric circuit board 106 by soldering are provided. The entire metal member 102 is plated with Ni or the like so that soldering can be easily performed. Each lead 30
Notches 313 are provided on one side or both sides of 2, 304, 305, 306, and 308, and are provided with good soldering without being affected by the heat capacity of the metal member 102. Can be attached. The screw hole 312 is a hole for connecting the ground terminal 204 of the inlet 101 to the metal member 102 with screws.
It is configured to fit over the ridge. Serrated part 310
Is for bringing into contact with another sheet metal, for example, a sheet metal provided for preventing electrostatic noise, radiation noise, and the like with respect to an electric component installed near the inlet 101, and is configured in a sawtooth shape to increase contact pressure. ing. An electric component, for example, a power switch mounted on an electric circuit board is fitted into the opening 309, so that the electric components can be integrated. The opening 307 is a projection 201 of the inlet 101.
To hold the inlet 101 to the metal member 102. The display 311 indicates a ground to which the inlet 101 is directly connected.

As shown in FIG. 4, holes 107, 109, 111, 112, and 113 for connecting the electric circuit board 106 to the metal member 102 are formed in the electric circuit board 106. Of these, holes 109, 111 and 112
And 107 are configured to be connected to a circuit ground pattern 409 formed on the back surface of the electric circuit board 106. Further, the hole 113 is configured such that the metal member 102 is mounted on the electric circuit board 106 so that conduction is obtained.
The electric circuit board 106 also has a ground jumper function. The holes 401 and 402 are holes for mounting and connecting the electric terminals 202 and 203 (FIG. 2) of the inlet 101, and for connecting to the electric circuit patterns 404 and 405, respectively. Holes 403 and 407,406
Reference numerals 408 and 408 denote holes for components mounted near the metal member 102 for noise absorption.

FIG. 1 shows an inlet 101 and a metal member 10.
2 is mounted on the electric circuit board 106, and the inlet 101 is a screw 11 having a loosening prevention function.
After being connected to and held by the metal member 102 in advance by the reference numeral 0, they are mounted on the electric circuit board 106 and connected by soldering.

FIG. 5 is a perspective view of a main part of an electronic apparatus according to a second embodiment of the present invention. The present embodiment is an example in which the present invention is applied to a panel-mounted inlet.

The panel-mounted inlet 501 is screwed to the metal member 502 by screws 505 and 506 and held. Further, the ground terminal 509 and the metal member 502 are connected to each other by a screw 510 having a function of preventing loosening of the screw. The metal member 502 is threaded, and the ground terminal 509 has a through hole. Further, a cut 511 is formed in the metal member 502 in order to absorb a variation in the position between the ground terminal 509 of the inlet 501 and the metal member 502. Holes 503 and 504
Is a hole used for connection with another metal member as shown in the first embodiment. The electrode terminal (not shown) and the vinyl electric wire 508 are connected by Faston or tied solder 507, and the other electrode terminal (not shown) is the same.

[0022]

As described above, the present invention has the following effects.

(1) The ground terminal of the power supply connector is fixed with a vinyl wire and soldered by a heat-shrinkable tube so that the ground terminal is screwed to the metal member.
And the inlet and metal member
And the inlet is directly connected.
Since the meaning of the symbol is provided on the metal member, the work efficiency of connecting the ground terminal of the power connector to the frame ground is improved.

(2) Since the ground line is not a vinyl electric wire, there is no need to protect the metal parts from the blade section, and the number of parts is reduced.

(3) Since there is no vinyl electric wire in the ground line, noise resistance is good.

(4) By connecting another metal member to the metal member to which the ground terminal is connected with a screw, the noise resistance is further improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part of an electronic device according to a first embodiment of the present invention.

FIG. 2 is a perspective view of an inlet 101 in FIG.

FIG. 3 is a perspective view of a metal member 102 in FIG.

FIG. 4 is a perspective view of the electric circuit board 106 in FIG.

FIG. 5 is a perspective view of a main part of an electronic device according to a second embodiment of the present invention.

FIG. 6 is a perspective view of a main part of a conventional example of an electronic device.

[Explanation of symbols]

101 inlet 102 metal member 106 electric circuit board 104, 105, 114 screw hole 107, 109, 111, 112, 113 hole 110 screw 201 convex portion 202, 203 electrode terminal 204 ground terminal 205 through hole 302, 304, 305, 306, 308 Lead 307,309 Opening 310 Saw-toothed part 311 Indication 312 Screw hole 313 Notch 401,402,403,406,407,408
Hole 404, 405 Electric circuit pattern 409 Circuit ground pattern 501 Inlet 502 Metal member 503, 504 Hole 505, 506, 510 Screw 507 Faston 508 Vinyl electric wire 509 Ground terminal 511 Cut

──────────────────────────────────────────────────続 き Continued from the front page (56) References JP-A-62-296381 (JP, A) JP-A-1-158678 (JP, U) JP-A-3-88416 (JP, U) JP-A-60-296 60891 (JP, U) 2-95175 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) H01R 31/648 H01R 4/64 H01R 12/04 H01R 13/73 H01R 4/38

Claims (2)

(57) [Claims] 1. An electronic device, comprising: an inlet having a ground terminal to which a power cord is connected; and a metal member holding the inlet, wherein the ground terminal of the inlet is connected to the metal member. The inlet and the metal member each have a fitting portion for fitting each other, the inlet and the metal member are fitted at respective fitting portions, and the ground terminal of the inlet and the metal member are screwed. Contact is fixed
And the metal member is a group to which the inlet is directly connected.
The electronic device according to claim Rukoto that have a display, which means the land. 2. The electronic device according to claim 1, further comprising a circuit board on which the inlet is mounted, wherein the inlet is fixed to the metal member and then mounted on the circuit board.